OA04674A - Process for preparing dehydrated calcium sulphates from phosphogypsum. - Google Patents

Process for preparing dehydrated calcium sulphates from phosphogypsum.

Info

Publication number
OA04674A
OA04674A OA55030A OA55030A OA04674A OA 04674 A OA04674 A OA 04674A OA 55030 A OA55030 A OA 55030A OA 55030 A OA55030 A OA 55030A OA 04674 A OA04674 A OA 04674A
Authority
OA
OAPI
Prior art keywords
phosphogypsum
calcium sulphates
dehydrated calcium
preparing dehydrated
preparing
Prior art date
Application number
OA55030A
Other languages
French (fr)
Inventor
Jean-Paul Susini
Marc Prigent
Charles Bouilly
Theophile Hofman
Bernard Neveu
Andre Pinault
Robert Sinn
Original Assignee
Charbonnages Ste Chimique
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Charbonnages Ste Chimique filed Critical Charbonnages Ste Chimique
Publication of OA04674A publication Critical patent/OA04674A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/466—Conversion of one form of calcium sulfate to another
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B11/00—Calcium sulfate cements
    • C04B11/02—Methods and apparatus for dehydrating gypsum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Drying Of Solid Materials (AREA)
OA55030A 1972-10-12 1973-10-09 Process for preparing dehydrated calcium sulphates from phosphogypsum. OA04674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7236170A FR2202851B1 (en) 1972-10-12 1972-10-12

Publications (1)

Publication Number Publication Date
OA04674A true OA04674A (en) 1980-07-31

Family

ID=9105549

Family Applications (1)

Application Number Title Priority Date Filing Date
OA55030A OA04674A (en) 1972-10-12 1973-10-09 Process for preparing dehydrated calcium sulphates from phosphogypsum.

Country Status (13)

Country Link
JP (1) JPS4975496A (en)
BE (1) BE805808A (en)
BR (1) BR7307953D0 (en)
DE (1) DE2350772A1 (en)
ES (1) ES419558A1 (en)
FR (1) FR2202851B1 (en)
GB (1) GB1429259A (en)
IE (1) IE38376B1 (en)
IL (1) IL43439A (en)
IT (1) IT999642B (en)
LU (1) LU68591A1 (en)
NL (1) NL7314064A (en)
OA (1) OA04674A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140702A (en) * 1980-11-10 1984-12-05 Bpb Industries Plc Fluidised bed calcination
AU3354697A (en) * 1997-07-15 1999-02-10 Marceli Cyrkiewicz Method and apparatus for the processing of phosphate gypsum waste
FR3059574A1 (en) * 2016-12-07 2018-06-08 Ocp Sa PHOSPHOGYPSE EVACUATION SYSTEM
CN112811837B (en) * 2020-12-31 2023-06-16 湖北聚海环境科技有限公司 System equipment and method for dehydrating and drying phosphogypsum by using high-temperature waste heat of regenerated aggregate
CN113772979A (en) * 2021-09-15 2021-12-10 贵州中建建筑科研设计院有限公司 Reference phosphorus building gypsum and manufacturing method and application thereof

Also Published As

Publication number Publication date
ES419558A1 (en) 1976-07-16
IL43439A (en) 1976-08-31
IE38376B1 (en) 1978-03-01
FR2202851A1 (en) 1974-05-10
DE2350772A1 (en) 1974-04-18
GB1429259A (en) 1976-03-24
BE805808A (en) 1974-02-01
FR2202851B1 (en) 1978-12-29
LU68591A1 (en) 1973-12-14
JPS4975496A (en) 1974-07-22
NL7314064A (en) 1974-04-16
IE38376L (en) 1974-04-12
IL43439A0 (en) 1974-03-14
IT999642B (en) 1976-03-10
BR7307953D0 (en) 1974-07-25

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